<PRE><B>Question 401907</B>
learning the math is really secondary, per se
math is the tool to teach you how to reason and logically solve problems


A + B + C = 180º


B = 3A


C = 2A + B


substituting ___ C = 2A + (3A) = 5A


substituting ___ A + (3A) + (5A) = 180º ___ 9A = 180º ___ A = 20º


substituting ___ B = 3(20º) = 60º


substituting ___ C = 5(20º) = 100º</PRE>